Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
  • C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
  • C07C2/42—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons homo- or co-oligomerisation with ring formation, not being a Diels-Alder conversion
  • C07C2/44—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons homo- or co-oligomerisation with ring formation, not being a Diels-Alder conversion of conjugated dienes only
  • C07C2/46—Catalytic processes
  • C07C2/465—Catalytic processes with hydrides or organic compounds
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
  • C07C2527/06—Halogens; Compounds thereof
  • C07C2527/125—Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium
  • C07C2527/126—Aluminium chloride
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
  • C07C2527/06—Halogens; Compounds thereof
  • C07C2527/128—Compounds comprising a halogen and an iron group metal or a platinum group metal
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
  • C07C2527/06—Halogens; Compounds thereof
  • C07C2527/135—Compounds comprising a halogen and titanum, zirconium, hafnium, germanium, tin or lead
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2531/00—Catalysts comprising hydrides, coordination complexes or organic compounds
  • C07C2531/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
  • C07C2531/12—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
  • C07C2531/14—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2531/00—Catalysts comprising hydrides, coordination complexes or organic compounds
  • C07C2531/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups C07C2531/02 - C07C2531/24
  • C07C2531/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups C07C2531/02 - C07C2531/24 of titanium, zirconium or hafnium
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2601/00—Systems containing only non-condensed rings
  • C07C2601/18—Systems containing only non-condensed rings with a ring being at least seven-membered
  • C07C2601/20—Systems containing only non-condensed rings with a ring being at least seven-membered the ring being twelve-membered

Definitions

• 1,5,9-cyclododecatriene can be prepared by the trimerization of butadiene in a solvent in the presence of the catalyst combination of a titanium halide and an alkyl aluminum halide.
• a titanium halide In place of the alkyl aluminum halide, trialkyl aluminum and dialkyl aluminum hydride may also be used with the titanium halide.
• This combination of catalysts is taught, for instance, by German Patents 1,050,333 and 1,056,123.
• German Patent 1,109,674 the disclosure of which is incorporated herein by ref-erence, teaches that this undesired polymerization of butadiene can be reduced by adding to the catalyst combination a further metal belonging to the first, second and third groups of the Periodic Table, or complex-forming compounds thereof, particularly the salts of alkali metals or alkaline earth metals.
• the ferric chloride-containing catalyst combination of this invention has increased activity, so that a larger amount of 1,5,9-cyclododecatriene is obtained per mole of alkyl aluminum compound per unit of time.
• the amount of ferric chloride added may be varied from 0.1 to moles and more of ferric chloride per mole of alkyl aluminum compound. Preferably, 0.5 to 2 moles of ferric chloride per mole of alkyl aluminum compound are used. Small amounts such as 0.1 to 0.5 mole of ferric chloride per mole of alkyl aluminum compound will give favorable results but the activity of the catalyst 3,316,314 Patented Apr. 25, 1967 will not be as great as if more than 0.5 mole of ferric chloride per mole of alkyl aluminum compound is used.
• ferric chloride e.g., 3 to 5 moles and more of ferric chloride per mole of alkyl aluminum compound
• the amount of alkyl aluminum compound used may also be varied with respect to the amount of titanium tetrachloride in the catalyst composition. Generally, at least 1 mole of alkyl aluminum compound per mole of titanium tetrachloride is needed to obtain the trimerization product. Preferably, 2 to 3 moles of alkyl aluminum compound per mole of titanium tetrachloride are used. While larger amounts of alkyl aluminum compound per mole of titanium tetrachloride may be used, the cost of the trimerization process will be adversely effected.
• alkyl aluminum compounds may be used in the catalyst composition of this invention, suitable examples of which are trialkyl aluminum, alkyl aluminum hydride and alkyl aluminum halide, the alkyl groups of which generally contain less than 6 carbon atoms.
• Preferred alkyl aluminum compounds are di-isobutyl aluminum hydride and tri-isobutyl aluminum.
• 0.5 to 2.5 moles of aluminum trichloride per mole of alkyl aluminum compound may be used, although preferably about equimolecular amounts of aluminum trichloride and alkyl aluminum compound are used.
• trimerization of butadiene is effected in a solvent, suitable examples of which are hydrocarbons, in particular aromatic hydrocarbons, such as benzene, toluene and mixtures thereof with other hydrocarbons, and chlorobenzene and cyclohexane. Cyclodecatriene can also be used as the reaction solvent.
• the catalyst component can be simultaneously added to the solvent, after which the butadiene may be introduced. It is recommended that the reaction between the components of the catalyst combination, i.e., the reduction of the titanium tetrachloride, take place before butadiene is brought into contact with the catalyst combination. This reaction between the catalyst components may also take place in the absence of the ferric chloride, which may be added later.
• the trimerization process using the novel catalyst composition of this invention may be carried out in the known way at a temperature from 10 to 150 (3., making allow ance for the exothermic character of the trimerization reaction in controlling the temperature.
• the reaction is at a temperature of 50 to C.
• the butadiene trimerization process preferably is effected by bubbling or otherwise passing butadiene through the catalyst-containing solvent at a rate such that unreacted butadiene is always contained in the gas discharged from the reactor.
• the reaction time and the weight of 1,5,9-cyclododecatriene produced per weight of catalyst composition may vary widely, depending upon the temperature and such facts as the economic balance between the cost of the catalyst composition and the price of butadiene and l,5,9-cyclodo decatriene. Generally, however, when the reaction is at the preferred temperature of 50 to 80 C., the reaction time will be about /24 to 3 hours. While a substantial excess of butadiene may be passed through the reactor, it is preferable to allow only a slight excess of unreacted butadiene to escape with the exit gas-i.e., less than 20% of the total butadiene fed to the reactor.
• Example I [n a 2 liter reaction vessel provided with a feeder, itirrer, a thermometer, a gas distributor and a discharge )6, 8.5 millimoles of tri-isobutyl aluminum were dislved under nitrogen in 375 ml. of benzene. 3.4 milli- Jles of titanium tetrachloride were added, with simulaeous stirring, and the mixture was stirred for 15 minas at a temperature of 40 C.
• alkyl aluminum compound is selected from the group consisting of trialkyl aluminum, alkyl aluminum hydride and alkyl aluminum halide compounds.
• alkyl aluminum compound is selected from the group consisting of diisobutyl aluminum hydride and tri-isobutyl aluminum.
• a catalyst composition for the trimerization of butadiene to cyclododecatriene comprising titanium tetrachloride, at least one mole of alkyl aluminum compound per mole of titanium tetrachloride, 0.5 to 2.5 moles of aluminum trichloride per mole of alkyl aluminum compound, and at least 0.1 mole of ferric chloride per mole of alkyl aluminum compound.
• composition of claim '7 wherein there are 0.5 to 2 moles of ferric chloride per mole of alkyl aluminum compound.
• composition of claim 8 wherein there are about equal molecular amounts of aluminum trichloride and alkyl aluminum compound and 2 to 3 moles of alkyl aluminum compound per mole of titanium tetrachloride.

Applications Claiming Priority (1)

Publications (1)

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ID=19792319

Family Applications (1)

Country Status (9)

Cited By (8)

• 0
  • NL NL128168D patent/NL128168C/xx active
• 1965
  • 1965-02-10 NL NL6501602A patent/NL6501602A/xx unknown
• 1966
  • 1966-02-08 GB GB5536/66A patent/GB1122205A/en not_active Expired
  • 1966-02-09 ES ES0322791A patent/ES322791A1/es not_active Expired
  • 1966-02-09 CH CH181266A patent/CH475174A/de not_active IP Right Cessation
  • 1966-02-10 SE SE01737/66A patent/SE334153B/xx unknown
  • 1966-02-10 DE DE19661593532 patent/DE1593532A1/de active Pending
  • 1966-02-10 AT AT121366A patent/AT263750B/de active
  • 1966-02-10 US US526347A patent/US3316314A/en not_active Expired - Lifetime
  • 1966-02-10 BE BE676301D patent/BE676301A/xx unknown

Non-Patent Citations (1)

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